Lester H. Mitchell was an irrigation advisor to the Secretary of the Interior and spent 41 years with the Bureau of Reclamation in the Interior Department. He was project manager of the Yellowstone, Riverton, and Shoshone projects and was responsible for much of the early homestead settlement in those areas. Mitchell also did educational work on water utilization and weed control in the arid west. He was also responsible for making a field survey and report on feasibility and soundness of the irrigation works and lands of Billings Bench Irrigation Association in Montana.
From the description of Lester H. Mitchell papers, 1920-1943. (University of Wyoming, American Heritage Center). WorldCat record id: 191914947